Your Holiday Pay Premium (HPP) is a lump sum paid each January. It compensates for the fact that when you take annual leave, you only receive your base rate — missing out on what you'd normally earn from overtime and rest day working. Chiltern calculate it by totalling your variable pay across the previous tax year, then applying your leave entitlement fraction.
Estimated HPP for current year's data
£–
Enter hours across your periods above to calculate
Formula (confirmed by Chiltern payroll): Total variable pay (overtime + rest day hours + London Allowance, per the agreed principles) × 4/52 = 7.69%. Variable pay excludes basic pay, peer training, expenses and bonuses. This estimate covers the current tax year 2025/26 — Chiltern will pay it in January 2027. Pro-rated if you were not employed for the full year. The amount is not in dispute; only the 8–21 month lag in payment timing.